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| SELECTION OF FILLER METAL FOR ALUMINUM BRAZING AND ITS REACTION WITH BASE METAL |
| by Zhang Qiyun and Liu Shuqi (Dept. of Chemistry; Beijing University) |
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Cite this article:
by Zhang Qiyun and Liu Shuqi (Dept. of Chemistry; Beijing University). SELECTION OF FILLER METAL FOR ALUMINUM BRAZING AND ITS REACTION WITH BASE METAL. Acta Metall Sin, 1981, 17(3): 300-377.
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Abstract The influence of 28 element additions on the melting point, flowability, corrosion resistance and fillet bending ability of A1-Si type filler metal has been investigated. Among these systems, filler 6M, i. e.A1-Si(13.0)-Be(0.4—0.8)-Sr (0.03—0.06)-La (0.03—0.06) is regarded as the optimum. The erosion mechanism of molten filler metal on base metal has been also studied. In addition to the influences of brazing temperature and the composition of filler metal, the rate of solution of base metal into molten filler and the spreading out of molten filler along the fillet are other of importance in affecting the erosion of base metal during brazing. The fillets were annealed for different time intervals and only a little improvement of their strength and bending capacity was observed.
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Received: 18 March 1981
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